bgp/linkstate/src/main/java/org/opendaylight/protocol/bgp/linkstate/impl/LinkstateRIBSupport.java

   1 /*
   2  * Copyright (c) 2016 Cisco Systems, Inc. and others.  All rights reserved.
   3  *
   4  * This program and the accompanying materials are made available under the
   5  * terms of the Eclipse Public License v1.0 which accompanies this distribution,
   6  * and is available at http://www.eclipse.org/legal/epl-v10.html
   7  */
   8 package org.opendaylight.protocol.bgp.linkstate.impl;
   9
  10 import com.google.common.base.Optional;
  11 import com.google.common.collect.ImmutableCollection;
  12 import com.google.common.collect.ImmutableSet;
  13 import io.netty.buffer.ByteBuf;
  14 import io.netty.buffer.Unpooled;
  15 import java.util.Collection;
  16 import java.util.List;
  17 import java.util.stream.Collectors;
  18 import javax.annotation.Nonnull;
  19 import org.opendaylight.controller.md.sal.dom.api.DOMDataWriteTransaction;
  20 import org.opendaylight.protocol.bgp.linkstate.impl.nlri.LinkstateNlriParser;
  21 import org.opendaylight.protocol.bgp.linkstate.spi.pojo.SimpleNlriTypeRegistry;
  22 import org.opendaylight.protocol.bgp.rib.spi.AbstractRIBSupport;
  23 import org.opendaylight.protocol.util.ByteArray;
  24 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev150210.LinkstateAddressFamily;
  25 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev150210.LinkstateSubsequentAddressFamily;
  26 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev150210.bgp.rib.rib.loc.rib.tables.routes.LinkstateRoutesCase;
  27 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev150210.linkstate.destination.CLinkstateDestination;
  28 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev150210.linkstate.routes.LinkstateRoutes;
  29 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev150210.linkstate.routes.linkstate.routes.LinkstateRoute;
  30 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev150210.update.attributes.mp.reach.nlri.advertized.routes.destination.type.DestinationLinkstateCaseBuilder;
  31 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev150210.update.attributes.mp.reach.nlri.advertized.routes.destination.type.destination.linkstate._case.DestinationLinkstate;
  32 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev150210.update.attributes.mp.reach.nlri.advertized.routes.destination.type.destination.linkstate._case.DestinationLinkstateBuilder;
  33 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.multiprotocol.rev130919.destination.DestinationType;
  34 import org.opendaylight.yangtools.yang.binding.DataObject;
  35 import org.opendaylight.yangtools.yang.common.QName;
  36 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
  37 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.NodeIdentifier;
  38 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.NodeIdentifierWithPredicates;
  39 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.PathArgument;
  40 import org.opendaylight.yangtools.yang.data.api.schema.ContainerNode;
  41 import org.opendaylight.yangtools.yang.data.api.schema.DataContainerChild;
  42 import org.opendaylight.yangtools.yang.data.api.schema.MapEntryNode;
  43 import org.opendaylight.yangtools.yang.data.api.schema.UnkeyedListEntryNode;
  44 import org.opendaylight.yangtools.yang.data.api.schema.UnkeyedListNode;
  45 import org.slf4j.Logger;
  46 import org.slf4j.LoggerFactory;
  47
  48 public final class LinkstateRIBSupport extends AbstractRIBSupport {
  49     private static final Logger LOG = LoggerFactory.getLogger(LinkstateRIBSupport.class);
  50     private static final QName ROUTE_KEY = QName.create(LinkstateRoute.QNAME, "route-key").intern();
  51     private static final LinkstateRIBSupport SINGLETON = new LinkstateRIBSupport();
  52     private final NodeIdentifier route = new NodeIdentifier(LinkstateRoute.QNAME);
  53     private final NodeIdentifier nlriRoutesList = new NodeIdentifier(CLinkstateDestination.QNAME);
  54
  55     private LinkstateRIBSupport() {
  56         super(LinkstateRoutesCase.class, LinkstateRoutes.class, LinkstateRoute.class, LinkstateAddressFamily.class, LinkstateSubsequentAddressFamily.class,
  57             DestinationLinkstate.QNAME);
  58     }
  59
  60     public static LinkstateRIBSupport getInstance() {
  61         return SINGLETON;
  62     }
  63
  64     @Override
  65     public ImmutableCollection<Class<? extends DataObject>> cacheableAttributeObjects() {
  66         return ImmutableSet.of();
  67     }
  68
  69     @Override
  70     public ImmutableCollection<Class<? extends DataObject>> cacheableNlriObjects() {
  71         return ImmutableSet.of();
  72     }
  73
  74     @Override
  75     public boolean isComplexRoute() {
  76         return true;
  77     }
  78
  79     @Override
  80     protected void processDestination(final DOMDataWriteTransaction tx, final YangInstanceIdentifier routesPath,
  81         final ContainerNode destination, final ContainerNode attributes, final ApplyRoute function) {
  82         if (destination != null) {
  83             final Optional<DataContainerChild<? extends PathArgument, ?>> maybeRoutes = destination.getChild(this.nlriRoutesList);
  84             processRoute(maybeRoutes, routesPath, attributes, function, tx);
  85         }
  86     }
  87
  88     private void processRoute(final Optional<DataContainerChild<? extends PathArgument, ?>> maybeRoutes, final YangInstanceIdentifier routesPath,
  89         final ContainerNode attributes, final ApplyRoute function, final DOMDataWriteTransaction tx) {
  90         if (maybeRoutes.isPresent()) {
  91             final DataContainerChild<? extends PathArgument, ?> routes = maybeRoutes.get();
  92             if (routes instanceof UnkeyedListNode) {
  93                 final YangInstanceIdentifier base = routesPath.node(routesContainerIdentifier()).node(this.route);
  94                 for (final UnkeyedListEntryNode e : ((UnkeyedListNode) routes).getValue()) {
  95                     final NodeIdentifierWithPredicates routeKey = createRouteKey(e);
  96                     function.apply(tx, base, routeKey, e, attributes);
  97                 }
  98             } else {
  99                 LOG.warn("Routes {} are not a map", routes);
 100             }
 101         }
 102     }
 103
 104     private NodeIdentifierWithPredicates createRouteKey(final UnkeyedListEntryNode linkstate) {
 105         final ByteBuf buffer = Unpooled.buffer();
 106         final CLinkstateDestination cLinkstateDestination = LinkstateNlriParser.extractLinkstateDestination(linkstate);
 107         SimpleNlriTypeRegistry.getInstance().serializeNlriType(cLinkstateDestination, buffer);
 108
 109         return new NodeIdentifierWithPredicates(LinkstateRoute.QNAME, ROUTE_KEY, ByteArray.readAllBytes(buffer));
 110     }
 111
 112     @Nonnull
 113     @Override
 114     protected DestinationType buildDestination(@Nonnull final Collection<MapEntryNode> routes) {
 115         return new DestinationLinkstateCaseBuilder().setDestinationLinkstate(
 116             new DestinationLinkstateBuilder().setCLinkstateDestination(extractRoutes(routes)).build()).build();
 117     }
 118
 119     @Nonnull
 120     @Override
 121     protected DestinationType buildWithdrawnDestination(@Nonnull final Collection<MapEntryNode> routes) {
 122         return new org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev150210.update.attributes.mp.unreach.nlri.withdrawn.routes.destination.type.DestinationLinkstateCaseBuilder().setDestinationLinkstate(
 123             new org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev150210.update.attributes.mp.unreach.nlri.withdrawn.routes.destination.type.destination.linkstate._case.DestinationLinkstateBuilder().
 124                 setCLinkstateDestination(extractRoutes(routes)).build()).build();
 125     }
 126
 127     private List<CLinkstateDestination> extractRoutes(final Collection<MapEntryNode> routes) {
 128         return routes.stream().map(LinkstateNlriParser::extractLinkstateDestination).collect(Collectors.toList());
 129     }
 130 }